Rotary valve



Feb.. 13, 1945. C, HALL *32,369,566

ROTARY VALVE Fled Oct.. 4, v191.155 2 :SheetsQ-Sheelvt 1 v INVENTOR.YCHARLES W. HALL B i I ATTORNEY.

Feb. 13, 1945. c. w. HALL. 2,369,565

ROTARY VALVE CHARLES W. HALL.

BY. M(

ATTORNEY.

well understood that it need not be described in detail here. It issufficient to say that rotation of the valve `I brings the intake tubeI8 and the exhaust tube I9 alternately into communication with thecylinder I0 to coincide with the intake and exhaust cycles of thelatter.

The sealing ring may be of any desired construction which will impartboth a diametric and an axial thrust so that it will seal itself both tothe walls of the port I6 and to the bottom of the valve I5. Such a ringis illustrated in detail in Fig. 6, in which the ring l1 proper has aninverted conical shape and is designated to rest in a conical ring seat.One or `more laterally expanding rings 21 are carried in ring grooves inthe ring Il and tend to expand against the inclined conicalwall of thering seat so as to tend to force the entire assembly. out of the conicalseat and snugly against the bottom of the rotary valve.

The bottom of the cylindrical surface of the valve is cut back as shownat 3l to accommodate the expansion of the bottom of the valve. Thecylindrical wall of the valve is splitas indicated at- 30 to allow it tobe contracted when forced into the chamber to insure a tight wall fit.

If it is desired to obtain a more uniform and greater pressure on thebottom of the valve in order to support the weight thereof, a secondthrust ring 32 may be positioned in an annular conical seat in thebottom of the valve chamber` diametrically opposite to the first sealingring I1. This second ring may be similar n construction to the ringIland it not only serves as a thrust ring butalso acts as an oildistributor. Lubricating oil is conducted through an oil hole 433 to thecenter of the ring 32, and since the ring is rotated by its contact withthe valve it will Ycontinuously and uniformlyl distribute the oil overthe lower surface of the valve.

An alternate method of lubricating the valve is indicated.k in Figs. and11. In this form a ,radially extending slide socket 34 is formed in ithebottomof the valve cham-ber. A sliding member-35 is mounted in thissocket so that it may reciprocate diametrically therein. Thereciprocationis imparted by means of an eccentric stud 36 formed on thebottom lof the rotary valve. This stud rides in a receiving slot 3l inthe member 35 so that during each rotationof the valve the member 35will be reciprocated one complete cycle. The constant reciprocation notonly serves to uniformly distribute the oil, but also prevents the`formation .of circular wear grooves or scratches in thebottom ofthevalve. The slide member 35 is formed of softer metal than the valve soas not to wear the latter. A spring member 38 is positioned-in thegroove 34 below the slide'member 35 to constantly force it against thevalve to assist in supporting the latter. is supplied to the slidesocket 34 through any suitable oil channel 38.

In Figs. '7 and 8 an alternate method of constructing the valve itselfis illustrated. In this form lthe valve isformed of one metal such asiron or aluminum and is surrounded by a. wear band 33 of steel or otherharder Wear resisting Oil intake metal. The wear band is shrunk onto thevalve so as to tightly grip the latter, and the band is provided with aseries of overlapping expansion slots 40, which allow it to expand andcontract under the influence of temperature and to accommodate theexpansion and contraction of the valve itself. The latter is split asshown at 4| to also accommodate expansion.

While a specific form of the improvement has been described andillustrated herein, it is desired to be understood that the same may bevaried, within the scope of the appended claims, without departing fromthe spirit of the invention.

Having thus described the invention, what is claimed and desired securedby Letters Patent is:

1. A` rotary valve for internal combustion enginescomprising acup-shaped valve member having a closed bottom and cylindrical side; anintake passage communicating eccentrically through said bottom andthrough the cylindrical side of said valve; an exhaust tube alsocommunieating eccentrically through said bottom, thence extending to theaxis of said valve, thence projecting axially through and beyond theopen top thereof; and a hub member' surrounding said exhaust tube forrotating said valve.

2. A rotary valve for internal combustion en gines comprising acup-shaped Ivalve member having a closed bottom and cylindrical side; anintake passage communicating eccentrically through said 'bottom andthrough the cylindrical side of said valve; an exhaust tube alsocommunicating eccentrically through said bottom, thence extending to theaxis of said valve, thence projecting axially through and beyond theopen top thereof; a hub member concentrically surrounding the exhausttube; and means for communicating the rotation of said hub member to thecylindrical wall of said valve.

`3. A rotary valve for internal combustion engines comprising aVcup-shaped valve member having a closed bottom and cylindrical side; anintake passage communicating eccentrically through said bottom andthrough the cylindrical side ofsaid valve; an exhaust tube alsocommunicating eccentrically through said bottom, thenceA extending tothe axis of said valve, thence projecting axially through and beyond theopen top thereof, a hub member surrounding said exhaust tube; and meansfor communicating the rotation of said hub member to the cylindricalwall of said valve, said hub member extending concentrically about saidexhaust passage in spaced relation thereto. i

4. A rotary valve for internal combustion engines comprising acup-shaped valve member having a closed bottom and cylindrical-side; anintake passage communicating eccentrically through said bottom andthrough the cylindrical side of said valve; rand an exhaust tube alsocommunicating eccentrically through said bottom, thence extending to theaxis of said valve, thence projecting axially through and beyond theA,open top thereof; a hub member surrounding s'aid exhaust tube; andmeans projecting from the cylindrical wall of said valve intoengagement;

with receiving means in said hubr member to cause the two elements torotate in unison.

5. A rotary valve for internal combustion engines comprising acup-shaped valvev member having a closed bottom and cylindrical side; anpassage communicatingy eccentrically through said bottom and through the.cylindrical side of said valve; an exhaust;A tube also coml e l n y2,369,566 lmunicating eccentrically vthroughsaid bottom,

thence extending to the'aXis ofsaid valve, thence projecting axiallythrough andbeyond the open top thereof a hubmember concentricallysurrounding saidfexhaust tube in Aspaced-relation therewith;v and anannular iiange formed on said hub member, said iiange` resting on theedge of the cylindrical wall ofsaid valve. y

c 6. A rotary. valve for internal icombustion engines comprising acup-shaped valve member having a closed bottom and cylindrical side;lany intake -,passage communicatingy [eccentrically through saidbottomand through the cylindrical side olfjsaid valve; an exhaust tube yalsocommunicating, eccentrically through said bottom,

thence extendingto the axis of said valve,ythence projecting axiallyAthrough and beyond theopen Y top thereof; a hubm'emberconcentric'ally'jsurroundingsaid exhaust tube Ainv spaced-relationtherewith; an annular flange formed on saidvhub member, said flangeresting on V:the edge of the cylindrical wall ofsaid valve; meansfor-:coml municating the rotativemovement of said hub Y member tosaidvvalve; andmeans for .rotating said hub member.

, '7. A rotary valve for anA internal combustion 'engine cylindercomprising; a valve chamber positioned adjacent the head of saidcylinder;`

an intake-port in theside of saidk chamber; a l

cylinder p ort communicating between said chamber and said cylinder toone side of the axis to the former; acup-shaped rotary valve resting insaid chamber; an intake tube opening through'the lbottom of said rotaryvalve vat a position to l register with said cylinder port, the otherextremity of `said intake tube communicating through the cylindricalwall of said valve at a point to register with'said intake port; anexhaust tube communicating through the bottom of saidvalve ,at a pointto register with said lcylinder port, vthe'otlier extremity of saidexhaust tube extending axially outward fromv the open top of ysaidvalve; a hubfmember concentri'cally surrounding saidlexhausty tube and`restf ing on the edge of thecylindrical .wall of said valve; means forrotating said hub member; and means for communicating the rotation oflsaid hub member to said valve. y y I 8..The combination with a rotaryvalve o fa .valve chamber pro-vided withfa receiving ygroove K initsbottom a slide member positioned in said' groove; vand means forreciprocating said slide jmember in consequence of the rotation of saidjvalve :to distribute lubrication over the vbottom thereof.r

9. The combination with a rotary valve o-f` a valve chamber providedwith a` receiving groove in'itsbottoma slide member positioned in saidgroove; means for reciprocating said slide member in consequence ofthe"rotation of said valve to distribute lubrication over the bottomthereof; and resilient means urging said slide member against said valveto support the latter.

' '10. The combination with a rotaryvalve of a valve chamber provided,with a receiving groove in its bottom a. yslide member positionedin'said groove; .and an eccentric stud projecting from Vthe-loottomf'olfv said valve into contact with said slide vmember toreciprocate the latter.

11. A sealing ring forfrotary valves comprising: an annular conicalring; a conical ring socket receiving said ring;' and radiallylexpansilole rings carried in ring slots in the rst ring said ex`pansible rings engaging the inclined walls of said socket to tend tocreate movement of said ring in an axialdirection so as to urge the ringassembly from said socket.` v

f CHARLES W. HALL.

